CN101680399B - Waterproof connecting structure for pipe - Google Patents
Waterproof connecting structure for pipe Download PDFInfo
- Publication number
- CN101680399B CN101680399B CN2008800177428A CN200880017742A CN101680399B CN 101680399 B CN101680399 B CN 101680399B CN 2008800177428 A CN2008800177428 A CN 2008800177428A CN 200880017742 A CN200880017742 A CN 200880017742A CN 101680399 B CN101680399 B CN 101680399B
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- Prior art keywords
- pipeline
- hole
- partition wall
- connection space
- gas
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
- F02M35/10249—Electrical or electronic devices fixed to the intake system; Electric wiring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10006—Air intakes; Induction systems characterised by the position of elements of the air intake system in direction of the air intake flow, i.e. between ambient air inlet and supply to the combustion chamber
- F02M35/10026—Plenum chambers
- F02M35/10039—Intake ducts situated partly within or on the plenum chamber housing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10091—Air intakes; Induction systems characterised by details of intake ducts: shapes; connections; arrangements
- F02M35/10124—Ducts with special cross-sections, e.g. non-circular cross-section
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10091—Air intakes; Induction systems characterised by details of intake ducts: shapes; connections; arrangements
- F02M35/10144—Connections of intake ducts to each other or to another device
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10373—Sensors for intake systems
- F02M35/1038—Sensors for intake systems for temperature or pressure
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L23/00—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid
- G01L23/24—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid specially adapted for measuring pressure in inlet or exhaust ducts of internal-combustion engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/02—Air cleaners
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
A waterproof connecting structure for a pipe for connecting an intake passage of an internal combustion engine and an external gas detector to convey gas into the intake passage. The structure includes a connecting space (14) to which the pipe is connected and a partition wall (12) formed between the intake passage and the connecting space (14). The connecting space has a larger diameter than the pipe. The partition wall (12) includes an elongate hole (14a) for placing the interior of the intake passage and the connecting space (14) in fluid communication. This configuration prevents intrusion of droplets drifting in through intake air and allows a high degree of freedom for location of the pipe.
Description
Technical field
The present invention relates to a kind of waterproof connecting structure that is used for pipeline, said pipeline is used for the gas-entered passageway of internal-combustion engine is linked to each other with the extraneous gas detector, so that the gas delivery in the said gas-entered passageway is arrived said gas detector.
Background technique
Inspiratory pressure sensor is arranged in the internal-combustion engine, with controlling combustion engine sometimes.In order to detect suction pressure, between inspiratory pressure sensor and gas-entered passageway, arrange pipeline, as disclosing at the open 2000-88688 of Japan Patent and Japan Patent described in the 9-68066 such as knock out drum through inspiratory pressure sensor.
In this pipeline, the water droplet that in knock out drum, produces possibly be attached to and be formed on this ducted hole.Water droplet can pass this hole and get into the pneumatic filter be arranged in the said pipeline or even get into inspiratory pressure sensor, thereby the high Precision Detection that has hindered inspiratory pressure sensor.In addition, at cold area, getting into said ducted water droplet possibly freeze, thereby causes said pipeline, gas transducer or inspiratory pressure sensor damaged.
The open 2000-88688 of Japan Patent discloses the annular thickening part around a kind of hole that is positioned at pipeline, in order to through the water droplet that moves along the wall surface of knock out drum is got in the pipeline away from the Kong Laifang sealing of this pipeline.
In the document, the water droplet that only can prevent to move along the wall surface of knock out drum near with invade in the said pipeline, but can not prevent that the water droplet that in air inlet, floats from invading in the said pipeline via this hole.
The open 9-68066 of Japan Patent discloses the slender cylinder and another cylindrical body that around the hole of pipeline, extends, and wherein the bicylindrical body structure has prevented that water from getting in the said pipeline.
The structure of the document can stop the water droplet that in air inlet, waves.Yet the inboard cylindrical body in this bicylindrical body is arranged on the set wall surface in the hole of said pipeline, and outer cylinder is arranged on the wall surface relative with the hole of said pipeline.It is complicated such as the gas-entered passageway of knock out drum that this structure makes, and the position that this waterproof construction is set is limited, and this has greatly reduced the position freedom of pipeline.
Summary of the invention
The purpose of this invention is to provide a kind of waterproof connecting structure that is used for pipeline, this waterproof connecting structure can prevent that water droplet that moves along the wall surface of knock out drum and the water droplet that in air inlet, floats from invading and make that the positioning free degree of pipeline is high.
In first aspect, a kind of waterproof connecting structure that is used for pipeline is provided, said pipeline is used for the gas-entered passageway of internal-combustion engine is linked to each other with the extraneous gas detector, so that the gas delivery in the said gas-entered passageway is arrived said gas detector.This structure comprises: connection space, and said pipeline is connected to this connection space; And partition wall, this partition wall is formed between gas-entered passageway and the said connection space.Compare with said pipeline, said connection space has bigger diameter.Partition wall comprises and is used for gas-entered passageway and connection space are arranged as the hole that fluid is communicated with.The cross section in this hole has shorter length and longer length.
According to this structure, be limited to the cross-section area of the cross-section area in the hole in the partition wall less than partition wall.Therefore, even the water droplet that in air inlet, floats and when the water droplet that the wall surface of gas-entered passageway moves arrives partition wall also can reduce the possibility that this water droplet arrives this hole.
In addition, the water droplet that arrives said hole for example concentrates on its vertical end owing to surface tension properties trends towards concentrating on the part place in this hole.Yet, because the cross section in hole is elongated, so unlikelyly on whole hole, form moisture film.Therefore, the gas delivery to gas detector is maintained under the kilter.
And, on whole hole, form moisture film owing to unlikely, so also discharge easily even the water droplet that in air inlet, floats gets into connection space from this hole.That is to say that water droplet is difficult to get into and rest in the connection space.
The opening area in this hole is less than the area of partition wall, and compares with the cross-section area in hole, and the cross-section area of connection space is enlarged.Therefore, even the water that gets in the connection space rests in the connection space, this water is also unlikely to be narrowed down the hole or blocks this hole.The diameter of connection space is also greater than the diameter of catheter pressure.Accordingly, got into the more unlikely obstruction end openings of water of connection space.Therefore, kept gas delivery to gas detector.
Said structure of the present invention provides the water proofing property to the water droplet that floats in the air inlet.Through being set for catheter pressure, connection space, partition wall and hole realize this waterproof connecting structure.Therefore, the position freedom that this structure is attached to knock out drum is high.
In one embodiment, when when observing perpendicular to the direction of partition wall, the part except that said hole of partition wall can with the open-ended part of pipeline or all overlapping.
According to this structure, water droplet is invaded and is become more difficult in the end openings, and has improved water-proof performance.
In another embodiment, the shorter length in the cross section in hole can be 1/2 or littler with longer length ratio.
According to this structure, the water droplet that is attached to this hole is owing to surface tension properties trends towards concentrating on the part place in hole, and unlikelyly on whole hole, forms moisture film.Therefore, effective water proofing property is provided.
In another embodiment, the hole can be biased to along the edge of partition wall and extend.This hole can be extended longer along this edge, and extending than short length in the radial direction at partition wall.
According to this embodiment, the inner water capacity of connection space is prone to be discharged in the gas-entered passageway.This is configured with and is beneficial to the end openings of the pipeline center-biased from the hole.This minimizing or prevented that water from moving to end openings from this hole, improved water-proof performance thus.
In second aspect, a kind of waterproof connecting structure that is used for pipeline is provided, this pipeline be used for gas-entered passageway with internal-combustion engine link to each other with the extraneous gas detector with the gas delivery of said gas-entered passageway to said gas detector.This pipeline comprises the end openings with center.This structure comprises: connection space, and said pipeline is connected to this connection space; And partition wall, this partition wall is formed between gas-entered passageway and the said connection space.Compare with said pipeline, said connection space has bigger diameter.Partition wall comprises and is used for gas-entered passageway and connection space are arranged as the hole that fluid is communicated with that wherein this hole is from the open-ended center-biased of said pipeline.
According to this structure, be limited to the cross-section area of the cross-section area in the hole in the partition wall less than partition wall.Therefore, can be reduced in the water droplet that floats in the air inlet and arrive the possibility in said hole along the water droplet that the wall surface of gas-entered passageway moves.
In addition, the end openings of pipeline is from this hole biasing.Therefore,, the hole blocks even being arrived the water droplet in this hole, even the moisture film in the hole is owing to the pressure vibration on the gas-entered passageway side is moved, and the also unlikely contact end openings of this moisture film.Therefore, the intrusion of unlikely generation water from this hole to said pipeline.
The opening area in hole is less than the area of the partition wall that covers connection space, and compares with the cross-section area in hole, and the cross-section area of connection space is enlarged.Therefore, rest in this connection space even get into the water of connection space, this water is also more unlikely to narrow down the hole or blocked hole.The diameter of connection space is also greater than the diameter of catheter pressure.Accordingly, got into the more unlikely obstruction end openings of water of connection space.Therefore, kept gas delivery to gas transducer.
Said structure of the present invention provides the water proofing property to the water droplet that in air inlet, floats.Through being set for catheter pressure, connection space, partition wall and hole realize this waterproof connecting structure.Therefore, the position freedom that is used for this structure is attached to knock out drum is high.
In one embodiment, the hole can be biased to along the edge of partition wall and extend.
According to this structure, the water capacity that gets into connection space is prone to be discharged to gas-entered passageway from the hole, has improved waterproofing effect thus.
In another embodiment, the edge that extends above that, hole can be the edge with respect to the foot of gravitational direction that comprises partition wall.
According to this structure, when the water yield in invading connection space increased, water trended towards moving to the foot along gravitational direction of connection space.Therefore, discharge the big water gaging in the connection space easily, improved waterproofing effect thus.
In another embodiment, the end of said pipeline can protrude through in the connection space, and the end openings of this pipeline can separate with the internal surface of connection space.
According to this structure, reduce or prevented the end openings that the water on the internal surface of connection space gets into said pipeline, improved waterproofing effect thus.
In an embodiment again, connection space can be a cylindrical space.Said hole is formed by two limits, and wherein limit is through limiting said hole with the curved part that extends along the said edge of said partition wall less than 180 ° central angle, and another limit is straight or crooked limit.
According to this structure, the hole narrows down towards the opposite end from the central authorities in this hole gradually.This causes water owing to surface tension properties concentrates on the opposite end, and unlikelyly moisture film occurs in centre.Therefore, be maintained under the kilter through the gas delivery of this hole to gas detector.
And, on whole hole, form moisture film owing to unlikely, therefore, also easy edge from this hole along partition wall is discharged to the outside even the water droplet that in air inlet, floats gets into connection space from this hole.That is to say that water droplet is difficult to get into and rest in the connection space, has improved water-proof performance thus.
In another embodiment, gas detector can be the inspiratory pressure sensor that is used for measuring the air pressure of gas-entered passageway.
According to this structure, waterproof connecting structure provides enough water proofing property to the inspiratory pressure sensor as gas detector, and it is high to be used for this structure is attached to the position freedom of knock out drum.Therefore, this inspiratory pressure sensor can be applied to various motors, and can be with the high Precision Detection pressure of inspiration(Pi).
In another embodiment, can in said pipeline, pneumatic filter be set.
According to this structure, prevented owing to the water or the freezing of this water that are trapped in the pneumatic filter cause pneumatic filter damaged.
Description of drawings
Fig. 1 is the longitudinal cross-section perspective view of knock out drum, is applied to this knock out drum according to the waterproof connecting structure that is used for pipeline of first embodiment of the invention;
Fig. 2 is the enlarged perspective of first embodiment's waterproof connecting structure;
Fig. 3 is first embodiment's the waterproof connecting structure and the longitdinal cross-section diagram of relevant portion;
Fig. 4 is the front view of example 1 that illustrates first embodiment's waterproof connecting structure;
Fig. 5 is the front view of example 2 that illustrates first embodiment's waterproof connecting structure;
Fig. 6 A to 6D is the front view that illustrates other the waterproof connecting structure that is used for pipeline; With
Fig. 7 is the longitdinal cross-section diagram that illustrates another connection space.
Embodiment
With the waterproof connecting structure of describing according to first embodiment of the invention that is used for pipeline.
Fig. 1 is the longitudinal cross-section perspective view with the intake manifold that is used for vehicle internal combustion engine 2 all-in-one-piece knock out drums 4.
Form intake manifold 2 through utilizing known technology such as Vibration Welding will comprise that a plurality of parts of knock out drum 4 combine.Intake manifold 2 comprises the guide portion 6 that is used to guide air inlet, and wherein air inlet supplies to this guide portion 6 from the closure that links to each other with guide portion 6.The air inlet (in Fig. 1, representing with big arrow) that gets into the space 4a in the knock out drum 4 is inhaled into the supplying mouth 8 of each cylinder (being four cylinders) here, and gives each cylinder through each path 10.
In the space 4a in knock out drum 4, partition wall 12 is formed on the introducing passage that is used for air inlet is incorporated into from guide portion 6 supplying mouth 8.Partition wall 12 is towards the downstream of inlet stream, and comprises the outer surface parallel with gravitational direction.As shown in Figure 2, between the outer surface 4b of partition wall 12 and knock out drum 4, form connection space 14.
Fig. 3 illustrates the longitdinal cross-section diagram of waterproof connecting structure and relevant portion.Connection space 14 is cylindrical spaces, and it has along the axis of the left and right directions among general horizontal direction or Fig. 3.In the axial end portion of partition wall 12A sealing connection space 14 one and comprise hole 14a.Connection space 14 is communicated with space 4a in the knock out drum 4 via hole 14a.Comprise the pilot hole 14b of the centre that is positioned at this wall with the wall on another outer circumferential face 4b side corresponding, knock out drum 4 in the axial end portion of connection space 14.The catheter pressure 16a of pneumatic filter 16 is mounted among the pilot hole 14b with the mode that closely contacts each other.Connecting duct 16b is formed on the opposition side of catheter pressure 16a in this pneumatic filter.Connecting duct 16b links to each other with inspiratory pressure sensor 20 via rubber hose 18.Therefore, the suction pressure among the space 4a of knock out drum 4 is delivered to inspiratory pressure sensor 20 through hole 14a, connection space 14, pneumatic filter 16 and rubber hose 18.
Referring now to Fig. 4, illustrate the position relation between the end openings 16g of connection space 14, hole 14a and catheter pressure 16a.Particularly; When the direction vertical with the outer surface of partition wall 12 observed; The downside L1 of curved line form that forms the part of hole 14a is the extension of a part on its axial direction of the inner peripheral surface of connection space 14, and identical with the line of the said part of the inner peripheral surface of connection space 14.Below the upside L2 of the form of straight lines of extending on the substantially horizontal of hole 14a is formed on the central axis C of connection space 14.
Now, will compare research.
As an example 1, intake manifold 2 as shown in Figure 4 is attached to petrol engine, and vehicle went 2 hours.Afterwards, pull down pneumatic filter 16 to measure the weight that has got into water wherein.The diameter R1 of the end openings 16g of catheter pressure 16a is 5mm, and the diameter R2 of connection space 14 is 12mm, and is 5mm to the height H 2 of upside L2 bottom from downside L1.The axial length of connection space 14 is about 20mm, and the outer surface of partition wall 12 is 25mm to the distance along the axial direction of catheter pressure 16a between the end openings 16g.
As an example 2, as shown in Figure 5, except the width S that makes hole 114a equals the diameter R15mm of end openings 16g), used and example 1 identical construction.As stated, petrol engine after the attached vehicle driving 3 hours, pull down pneumatic filter 16 to measure the weight that has got into water wherein.
As comparative example, in knock out drum 4, do not form connection space 14, and catheter pressure 16a is projected into directly among the space 4a of knock out drum 4, and pneumatic filter 16 is attached to this knock out drum 4.After vehicle driving 2 hours, pull down pneumatic filter 16 to measure the weight that has got into water wherein.
The result is following:
Example 1:14mg
Example 2:60mg
Comparative example: 191mg
This result shows: can prevent water intrusion pneumatic filter 16 like Fig. 1 to the waterproof connecting structure that is used for pipeline that comprises connection space 14, partition wall 12 and hole 14a or 114a according to first embodiment shown in Figure 5.
The area of hole 14a in the example 1 is greater than the area of the hole 114a in the example 2.Therefore, estimate with example 2 in compare, in example 1, will have more water droplets to get into connection space 14 from the space 4a of knock out drum 4.Yet in fact, in example 1, the water yield that gets into pneumatic filter 16 is than lacking in the example 2.This reason is inferred as follows.
That is to say, the hole 14a of example shown in Figure 41 is compared with the hole 114a of example 2 shown in Figure 5 that in embodiment 1, getting into the amount of the water droplet in said hole from the space 4a of knock out drum 4 should be than more the embodiment 2.Yet, because the shape of open region or the cross section of the hole 114a in the example 2 is a square rather than elongated roughly, therefore with example 1 in contrast, block whole hole 11a thereby more possibly form moisture film attached to the water droplet around the 114a of hole.
Therefore, water droplet temporarily is stored in the connection space 14, moves, contacts and be transported in the pneumatic filter 16 with the end openings 16g of catheter pressure 16a through the pressure vibration among the 4a of space.
On the other hand, the open region of the hole 14a of example 1 or the shape of cross section are elongated, that is, hole 14 has arc downside L1 as shown in Figure 4 and straight upside L2.Therefore, the bight Y of hole 14a is narrow, makes the water droplet that is adhered to rest on Y place, bight probably.Yet, because hole 14a along continuous straight runs is long, so unlikelyly on whole hole 14a, produce moisture film.Particularly, hole 14a is wide in centre, and therefore unlikely moisture film appears in the centre of 14a in the hole.
Correspondingly, with the contrast in the example 2, the draining the space 4a from connection space 14 to knock out drum is not weakened.Therefore, water still less accumulates in the connection space 14, and with example 2 in the more unlikely generation water of contrast owing to pressure vibration is invaded in the pneumatic filter 16.Believe that this is a reason that why on effect, there are differences between example 1 and the example 2.
First embodiment has the following advantages:
(1) water droplet that floats in the air inlet in gas-entered passageway (or knock out drum 4) and arrive partition wall 12 sometimes along the water droplet of the wall surface transmission of knock out drum 4.Even in this situation,, in hole 14a or 114a, can reduce the possibility that these water droplets arrive hole 14a or 114a owing to make the area of the area of hole 14a or 114a less than partition wall 12.
In addition, the open region of hole 14a as shown in Figure 4 or the shape of cross section are elongated (shorter length and longer length ratio are about 0.4, and this is less than 1/2).Particularly, hole 14a is formed by two limits: a limit is with the following L1 less than 180 ° central angle, the bending of on the edge of partition wall 12, extending or arc, and another limit is horizontally extending straight top L2.The central authorities of hole 14a 14a from the hole towards the opposite end or bight Y narrow down gradually.
Because the hole 14a of Fig. 4 has such structure, so water owing to surface tension properties trends towards concentrating on Y place, bight, and unlikelyly moisture film occurs in centre.Therefore, unlikelyly on whole hole 14a, moisture film occurs, thereby allow to remain under the kilter to the gas delivery of gas detector (inspiratory pressure sensor 20) via hole 14a.In addition, even the water droplet that in air inlet, floats gets in the connection space 14, they also are discharged to knock out drum 4 via hole 14a easily, and the whole surface of hole 14a is not covered by moisture film.Therefore, reduced intrusion and water droplet the stop duration in connection space 14 of water droplet in the connection space 14.
For the hole 114a of Fig. 5, to compare with the hole 14a of Fig. 4, water droplet is unlikely to get into connection space 14 via hole 114a.Even hole 114a is blocked by water droplet, among their also unlikely intrusion catheter pressure 16a.This be because hole 114a from the center-biased of the end openings 16g of pipeline (catheter pressure 16a), even and be formed on moisture film on the 11a of hole owing to the pressure vibration in the knock out drum 4 vibrates, hole 114a is also unlikely to be contacted with end openings 16g.
Therefore, the hole 14a of Fig. 4 and Fig. 5 and 114a are used for reducing the water droplet that floats in air inlet and the intrusion of the water droplet that moves along the wall surface of knock out drum 4.In addition, through being set for catheter pressure 16a, connection space 14, partition wall 12 and hole 14a or 114a realize this waterproof connecting structure.Therefore, the positioning free degree that is used for this structure is attached to knock out drum 4 is high.
(2) like Fig. 4 and shown in Figure 5, when when observing perpendicular to the direction of partition wall 12, the remainder except hole 14a or 114a of partition wall 12 and the end openings 16g's of catheter pressure 16a is a part of overlapping.Therefore, the end openings 16g of the more unlikely entering catheter pressure of water droplet 16a has improved water-proof performance thus.
(3) the hole 14a of Fig. 4 is biased to along the edge of partition wall 12 and extends, and promptly downside L1 is corresponding with the edge of partition wall 12.The open region in hole 14 or cross section be the edge head of partition wall 12, and shorter in the radial direction at partition wall 12.Therefore, even water gets into and rests in the connection space 14, it also will be discharged to the knock out drum 4 from connection space 14 inside easily.In addition, owing to hole 14a extends along the edge of partition wall 12, therefore when arranging catheter pressure 16a, end openings 16g can be positioned to the center-biased of the 14a from the hole, improves water-proof performance thus.
The hole 114a of Fig. 5 also extends along the edge of partition wall 12.Therefore, similar with the situation of hole 14a, the water in the connection space 14 also can easily be discharged in the knock out drum 4 via hole 114a, has improved water-proof performance thus.In addition, when arranging catheter pressure 16a, end openings 16g can be positioned to the center-biased of the 114a from the hole, has improved water-proof performance thus.
When (4) water yield in invading connection space 14 increased, water trended towards moving to the foot along gravitational direction of connection space 14.In this embodiment, the edge of the partition wall 12 at hole 14a and 114a place is positioned at the foot of partition wall 12.Therefore, can easily discharge the big water gaging in the connection space 14, improve water-proof performance thus.
(5) as shown in Figure 3, the end of catheter pressure 16a protrudes in the connection space 14, and in this connection space 14, the internal surface of end openings 16g and connection space 14 separates.This structure reduces or prevents that the water on the internal surface of connection space 14 from getting into end openings 16g, improved the waterproofing effect to pneumatic filter 16 or inspiratory pressure sensor 20 thus.
First embodiment's the waterproof connecting structure that is used for pipeline is applied to the pipeline joint of inspiratory pressure sensor 20, and with the air pressure of the gas-entered passageway that is used for measuring internal-combustion engine, this has realized the abundant waterproof to the water droplet that floats in the air inlet.In addition, can only connection space 14, partition wall 12 and hole 14a be set or 114a forms waterproof connecting structure through joint place at catheter pressure 16a.Therefore, the position freedom that this structure is attached to knock out drum 4 is high.Therefore, inspiratory pressure sensor 20 is applicable to various types of internal-combustion engines easily, thereby with the high Precision Detection pressure of inspiration(Pi).
(6) the also unlikely entering of water than inspiratory pressure sensor 20 more near the pneumatic filter 16 of knock out drum 4.That is to say, prevented owing to be trapped in the water in the pneumatic filter 16 or because this water icing causes pneumatic filter 16 breakages.
The foregoing description can be revised as follows.
In first embodiment, hole 14a is positioned on the side at edge of partition wall 12, and wherein this edge is the foot along gravitational direction of partition wall 12.Alternately, shown in Fig. 6 A, the hole can be positioned at for partition wall 12 along on the side at the edge of the intermediate portion of gravitational direction, like shown hole 214a.In this situation, the lower end of the 214a from the hole of the water in the connection space 14 is discharged to knock out drum.Therefore, can obtain hole 14a similar effects with Fig. 4.
Shown in Fig. 6 B, upside can raise up to having the hole 314a of protruding upside L3, rather than the straight upside L2 among Fig. 4.In this structure, hole 314a is wide in centre, and this is being effective aspect raising drainage performance.
Shown in Fig. 6 C, upside can also be downwardly convex as the hole 414a with recessed downside L4.In this structure, hole 314a is narrow in centre, and this is reducing or is preventing that aspect the water droplet intrusion be effective.In addition, partition wall 12 is overlapping with whole end openings 16g, and this is reducing or is preventing that aspect the water droplet intrusion end openings 16g be effective.
Shown in Fig. 6 D, the opposite end of upside L5 can be positioned on the horizontal dotted line of passing central axis C, and only the middle body of upside L5 can be outstanding towards downside L6.Then, when when observing perpendicular to the direction of partition wall 12, outstanding line M can be overlapping with the whole end openings 16g of catheter pressure.This structure reduces effectively or has prevented that water droplet from directly invading among the end openings 16g.
As shown in Figure 7, when when observing,, connection space 614 has large diameter cylindrical body form through being made for perpendicular to the direction of partition wall 12, and the position of the end openings 616g of the position of hole 614a and catheter pressure 616a can be setovered greatlyyer.In this situation, hole 614a is positioned at the foot along gravitational direction of partition wall 612, and catheter pressure 616a locatees the topmost part along gravitational direction as far as possible.Even a large amount of water droplets are from knock out drum 604 inner temporary transient entering connection space 614 and gatherings connection space 614, this structure prevents that also water droplet from arriving end openings 616g.
In the above-described embodiments, forming porose partition wall in it is the outer surface parallel with gravitational direction, the downstream of the inlet stream of this partition wall in the knock out drum.Yet, can partition wall be positioned in the another part in the knock out drum.For example, partition wall can face down and extend perhaps and can obliquely extend below along substantially horizontal.
Claims (8)
1. waterproof connecting structure that is used for pipeline; Said pipeline is used for the gas-entered passageway of internal-combustion engine is linked to each other with the extraneous gas detector; So that to said gas detector, wherein said pipeline comprises the end openings with center with the gas delivery in the said gas-entered passageway, said structure comprises:
Connection space, said pipeline is connected to said connection space, wherein compares with said pipeline, and said connection space has bigger diameter; With
Partition wall, said partition wall are formed between said gas-entered passageway and the said connection space,
It is characterized in that,
Said partition wall comprises and is used for said gas-entered passageway and said connection space are arranged to the hole that fluid is communicated with,
The cross section in wherein said hole has shorter length and a longer length,
Wherein said hole becomes along the edge of said partition wall to extend from the open-ended center-biased of said pipeline,
Wherein said hole is extended longer along said edge, and shorter in the extension in the radial direction of said partition wall, and
Wherein, the said edge that extends above that, said hole is the edge with respect to the foot of gravitational direction that comprises said partition wall.
2. the waterproof connecting structure that is used for pipeline according to claim 1 is characterized in that,
When observing perpendicular to the direction of said partition wall, the part except said hole of said partition wall and the open-ended part of said pipeline or all overlapping.
3. the waterproof connecting structure that is used for pipeline according to claim 1 and 2 is characterized in that, said shorter length in the cross section in said hole and said longer length ratio are 1/2 or littler.
4. waterproof connecting structure that is used for pipeline; Said pipeline is used for the gas-entered passageway of internal-combustion engine is linked to each other with the extraneous gas detector; So that to said gas detector, wherein said pipeline comprises the end openings with center with the gas delivery in the said gas-entered passageway, said structure comprises:
Connection space, said pipeline is connected to said connection space, wherein compares with said pipeline, and said connection space has bigger diameter; With
Partition wall, said partition wall are formed between said gas-entered passageway and the said connection space,
It is characterized in that,
Said partition wall comprises and is used for said gas-entered passageway and said connection space are arranged to the hole that fluid is communicated with,
Wherein said hole becomes along the edge of said partition wall to extend from the said open-ended center-biased of said pipeline,
Wherein, the said edge that extends above that, said hole is the edge with respect to the foot of gravitational direction that comprises said partition wall.
5. according to claim 1 or the 4 described waterproof connecting structures that are used for pipeline, it is characterized in that the end of said pipeline is projected in the said connection space, and the said end openings of said pipeline and the internal surface of said connection space separate.
6. according to claim 1 or the 4 described waterproof connecting structures that are used for pipeline; It is characterized in that; Said connection space is a cylindrical space; The profile in wherein said hole is formed by two limits, and wherein limit is through limiting the profile in said hole with the curved part that extends along the said edge of said partition wall less than 180 ° central angle, and another limit is straight or crooked limit.
7. according to claim 1 or the 4 described waterproof connecting structures that are used for pipeline, it is characterized in that said gas detector is the inspiratory pressure sensor that is used for measuring the air pressure of said gas-entered passageway.
8. according to claim 1 or the 4 described waterproof connecting structures that are used for pipeline, it is characterized in that, in said pipeline, be provided with pneumatic filter.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP159441/2007 | 2007-06-15 | ||
| JP2007159441A JP4792427B2 (en) | 2007-06-15 | 2007-06-15 | Piping waterproof connection structure |
| PCT/JP2008/061274 WO2008153213A1 (en) | 2007-06-15 | 2008-06-13 | Waterproof connecting structure for pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101680399A CN101680399A (en) | 2010-03-24 |
| CN101680399B true CN101680399B (en) | 2012-06-13 |
Family
ID=39745568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008800177428A Expired - Fee Related CN101680399B (en) | 2007-06-15 | 2008-06-13 | Waterproof connecting structure for pipe |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US8359910B2 (en) |
| EP (1) | EP2145097B1 (en) |
| JP (1) | JP4792427B2 (en) |
| CN (1) | CN101680399B (en) |
| AT (1) | ATE556214T1 (en) |
| WO (1) | WO2008153213A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5534855B2 (en) * | 2010-02-22 | 2014-07-02 | ヤンマー株式会社 | engine |
| CN102305159A (en) * | 2011-08-26 | 2012-01-04 | 上汽通用五菱汽车股份有限公司 | Engine dual-fuel plastic air inlet manifold |
| JP5814106B2 (en) * | 2011-12-26 | 2015-11-17 | トヨタ自動車株式会社 | Intake manifold |
| JP6915409B2 (en) * | 2017-06-30 | 2021-08-04 | トヨタ紡織株式会社 | Intake manifold |
| KR102586328B1 (en) * | 2018-08-27 | 2023-10-06 | 현대자동차 주식회사 | Intake manifold and engine having the same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1142606A (en) * | 1995-05-13 | 1997-02-12 | 罗伯特-博希股份有公司 | Pressure sensor for IC engine with intaking pipe |
| US6604424B1 (en) * | 1999-06-16 | 2003-08-12 | Denso Corporation | Pressure detecting apparatus and installation structure of same |
| CN1761808A (en) * | 2003-03-20 | 2006-04-19 | 株式会社京滨 | Throttle body |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5866034A (en) * | 1981-10-14 | 1983-04-20 | Nippon Denso Co Ltd | Pressure detecting apparatus |
| US4489595A (en) * | 1983-03-28 | 1984-12-25 | General Motors Corporation | Engine air inlet pressure measurement |
| JPS6093328A (en) | 1983-10-26 | 1985-05-25 | Fujitsu Ten Ltd | Detection for pressure of intake air in internal combustion engine |
| JPS63233294A (en) | 1987-03-20 | 1988-09-28 | Agency Of Ind Science & Technol | Gas liquid separation type vertical thermo siphon |
| JP2732665B2 (en) * | 1988-07-08 | 1998-03-30 | 株式会社日本自動車部品総合研究所 | Intake pipe pressure detector |
| US5939628A (en) * | 1995-05-30 | 1999-08-17 | Hitachi, Ltd. | Thermal type air flow measuring instrument for internal combustion engine |
| JPH0968066A (en) | 1995-08-29 | 1997-03-11 | Daihatsu Motor Co Ltd | Intake air pressure detecting device of internal combustion engine |
| US5804718A (en) * | 1996-04-24 | 1998-09-08 | Denso Corporation | Airflow meter having an inverted u-shape bypass passage |
| JPH11141417A (en) * | 1997-11-06 | 1999-05-25 | Toyota Motor Corp | Surge tank |
| JPH11159367A (en) * | 1997-11-28 | 1999-06-15 | Nippon Soken Inc | Path for transmitting pressure in intake tube |
| JP2000088688A (en) * | 1998-09-11 | 2000-03-31 | Nippon Soken Inc | Pressure detecting apparatus for internal-combustion engine |
| DE19934832A1 (en) | 1999-07-24 | 2001-01-25 | Bosch Gmbh Robert | Pressure sensor for IC engine air intake pipe has anti-freeze fluid in section of sensor channel coupling pressure sensor to air intake pipe closest to sensor surface |
| JP3848934B2 (en) * | 2003-05-16 | 2006-11-22 | 三菱電機株式会社 | Air flow measurement device |
| JP2005048597A (en) * | 2003-07-29 | 2005-02-24 | Kojima Press Co Ltd | Pressure lead-out port structure for air connector |
| JP4357233B2 (en) * | 2003-07-31 | 2009-11-04 | トヨタ自動車株式会社 | Internal combustion engine surge tank |
| JP4422654B2 (en) * | 2005-08-02 | 2010-02-24 | トヨタ自動車株式会社 | Intake manifold |
| JP4814164B2 (en) * | 2007-07-17 | 2011-11-16 | 本田技研工業株式会社 | Intake device for internal combustion engine |
| US7938105B2 (en) * | 2007-09-25 | 2011-05-10 | Ford Global Technologies, Llc | High flow (delta P) differential pressure EGR system with provision for both flow control and OBD monitor |
| JP5015827B2 (en) * | 2008-03-05 | 2012-08-29 | トヨタ自動車株式会社 | Intake path gas introduction structure and intake manifold |
-
2007
- 2007-06-15 JP JP2007159441A patent/JP4792427B2/en not_active Expired - Fee Related
-
2008
- 2008-06-13 WO PCT/JP2008/061274 patent/WO2008153213A1/en active Application Filing
- 2008-06-13 EP EP08777424A patent/EP2145097B1/en not_active Not-in-force
- 2008-06-13 US US12/602,971 patent/US8359910B2/en active Active
- 2008-06-13 AT AT08777424T patent/ATE556214T1/en active
- 2008-06-13 CN CN2008800177428A patent/CN101680399B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1142606A (en) * | 1995-05-13 | 1997-02-12 | 罗伯特-博希股份有公司 | Pressure sensor for IC engine with intaking pipe |
| US6604424B1 (en) * | 1999-06-16 | 2003-08-12 | Denso Corporation | Pressure detecting apparatus and installation structure of same |
| CN1761808A (en) * | 2003-03-20 | 2006-04-19 | 株式会社京滨 | Throttle body |
Non-Patent Citations (2)
| Title |
|---|
| JP昭58-66034A 1983.04.20 |
| JP特开11-159367A 1999.06.15 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101680399A (en) | 2010-03-24 |
| ATE556214T1 (en) | 2012-05-15 |
| JP4792427B2 (en) | 2011-10-12 |
| EP2145097B1 (en) | 2012-05-02 |
| EP2145097A1 (en) | 2010-01-20 |
| WO2008153213A1 (en) | 2008-12-18 |
| JP2008309112A (en) | 2008-12-25 |
| US20100164225A1 (en) | 2010-07-01 |
| US8359910B2 (en) | 2013-01-29 |
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